Actually the right hand side to be exact.
Why? well my '58 Remmy suddenly stopped locking the cylinder. I checked the spring, stripped & cleaned everything & noticed there is a "nub" of metal in the cue out flat on the lower right side of the hammer. It looks like it used to be a part that somehow wore down & I'm trying to figure out if this is my problem.

The bolt is stiff to move, but will function to pop up & lock the cylinder with a little "extra" help from a finger.

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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?

Well, all right. I just happen to have a brand new one. It's for a Pietta. I
guess I will put my coffee cup down and go take a picture. If you need it
I will sell it to you. It's 12:40 now. Be back in about 1/2 hour.

Perfect! Thank you.
Now for the $2.00 question
Can anyone tell me what the round protrusion with the little dab of grease (I hope) actually does?
Does it relate to operating the bolt & locking the cylinder?

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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?

BTW. It is not uncommon for a bolt to stick in the extended position if you operate the revolver without the cylinder installed. Essentially the bolts extends too far and gets stuck in the extended position. To get the pistol to cycle with the cylinder out, you may need to push the bolt back down into its retracted position with your thumb.

The bolt will initially resist your efforts but then it will pop nto the retracted position.

This happens on about half the pistols I own.

From the overall appearance of your hammer you are ready for a new one or at least some work on this one.

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Doc

My reading of history convinces me that most bad government results from too much government. Thomas Jefferson

One leg of the bolt rides on the side of that cam. As the hammer is pulled back it pushes the leg up, causing the bolt to lower, until the cam rotates to the point where the side 'disappears', allowing the bolt to respond to the spring load and snap up into place in the cylinder stop notch.

Thanks!
I need to take a picture of mine from exactly that angle.
As I learn how the 2 parts interact I'm beginning to get the feel that the bottom edge of my cam (on the left in your latest pic) has worn a depression & that may be what's causing the problem as the bolt's leg tries to ride up that surface to reset.

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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?

Well this may be the answer. I tore the action down again & smoothed & polished the scallop in the bottom edge of the cam, It took some work, but the leg now operates much more smoothly. I'm thinking the combination of the dragging bolt & the gnarly ramp on the cam probably overstressed a weak point & it went south.

Then the spring went *clik* & snapped off the leg going to the cam so I ordered a couple of replacements from VTI.

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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?

Quick update.
I've been informed you can order just the cam
Of course you have to install it & orient it correctly, but I figure I have nothing to lose at this point. The worst that could happen would be to need a new hammer, which is right where I am now!
I'll keep you all posted.

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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?

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